Anyone here familiar with Bayesian inference?

I would like to inform priors for an analysis. I have Odds Ratios and 95% CIs. How would I calculate the variance from the CIs. I know how to calculate SEs, but I don't think that is the custom for priors (its usually mean and variance).

Example: I have to average two ORs (1.01 + 0.96)/2 = .99. The largest upper limit of the CIs =1.06 and the smallest lower limit of the CIs = .91. The SE = (1.06-0.91)/3.92 = 0.04. But, again, I don't think using SEs is the standard for priors. Can anyone use this information to calculate the variance?

If you can, you will be my best friend forever.